| 3401 | Limestone Productions | Bartlesville, OK 74006-8229 | Oil & Gas Operator | Sep 2013 |
| 3402 | Linam Harry Dba Sooner State Production | Marlow, OK 73055-0583 | Oil & Gas Operator | Apr 2015 |
| 3403 | Linam Richard Dwayne | Marlow, OK 73055-8658 | Oil Operator | Jan 2026 |
| 3404 | Lincoln 77 Inc | Chanute, KS 66720 | Oil Operator | Dec 2001 |
| 3405 | Lincoln Rock Corporation | Northfield, IL 60093 | Oil & Gas Operator | Jul 2003 |
| 3406 | Lincoln Ventures LLC | Inola, OK 74036-5035 | Oil & Gas Operator | Jan 2026 |
| 3407 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Jun 2025 |
| 3408 | Link Oil Company (The) | Tulsa, OK 74103-4113 | Oil & Gas Operator | Jan 2014 |
| 3409 | Linn Mid-Continent Operating Inc | Houston, TX 77002-3018 | Oil & Gas Operator | Jun 2016 |
| 3410 | Lion Petroleum Company | Oklahoma City, OK 73120-4503 | Oil & Gas Operator | Aug 2015 |
| 3411 | Liston V Dean | Nowata, OK 74048-5200 | Oil & Gas Operator | Nov 2016 |
| 3412 | Litsey Exploration LLC | Okmulgee, OK 74447 | Oil & Gas Operator | Jan 2026 |
| 3413 | Little Bear Oil & Gas Co LTD | Boca Rotan, FL 33431 | Oil & Gas Operator | Jan 1997 |
| 3414 | Little Bear Resources LLC | Stillwater, OK 74074-1388 | Oil & Gas Operator | Feb 2013 |
| 3415 | Little Chicago Oil & Gas Inc | Edmond, OK 73034-0809 | Oil & Gas Operator | Dec 2017 |
| 3416 | Little Chief Energy Corporation | Independence, KS 67301 | Oil Operator | Feb 2026 |
| 3417 | Little O Oil Company | Velma, OK 73091-0425 | Oil & Gas Operator | Apr 2015 |
| 3418 | Little Oil Company LLC | Cushing, OK 74023 | Oil Operator | Jan 2026 |
| 3419 | Little River Energy Company | Drumright, OK 74030 | Oil & Gas Operator | Feb 2026 |
| 3420 | Little Thunder, LLC | Bartlesville, OK 74003 | Oil Operator | Jan 2026 |
| 3421 | Littrell Chemical Inc | Cleo Springs, OK 73729 | Oil & Gas Operator | Jan 2005 |
| 3422 | Litzenberger Exploration | Waynoka, OK 73860 | Oil & Gas Operator | Jul 1996 |
| 3423 | Litzenberger Exploration Inc | Waynoka, OK 73860 | Oil & Gas Operator | Feb 2026 |
| 3424 | Lo-Jel Energy LLC | Oklahoma City, OK 73162-7418 | Oil & Gas Operator | Nov 2019 |
| 3425 | Lobar Oil Co LLC | Edmond, OK 73013 | Oil & Gas Operator | Jan 2026 |
| 3426 | Lobo Energy, Inc. | Laredo, TX 78044 | Oil & Gas Operator | Nov 1996 |
| 3427 | Lobo Exploration Company | Yukon, OK 73099 | Oil & Gas Operator | Jan 2026 |
| 3428 | Lobo Petroleum Inc | Guymon, OK 73942-0714 | Oil Operator | Jul 2016 |
| 3429 | Locators Oil And Gas Inc | Guthrie, OK 73044 | Oil & Gas Operator | Oct 2022 |
| 3430 | Locin Oil Corporation | Katy, TX 77494 | Oil & Gas Operator | May 2026 |
| 3431 | Locke Stock & Barrel Res Inc | Calgary, AB T2P3G | Oil Operator | Nov 1998 |
| 3432 | Loco Oil Company | Loco, OK 73442 | Oil Operator | Feb 1993 |
| 3433 | Lodestone Operating, Inc. | Portland, TX 78374 | Oil & Gas Operator | May 2026 |
| 3434 | Logan Productions LLC | Wewoka, OK 74884 | Oil Operator | May 2025 |
| 3435 | Loki Oil LLC | Cushing, OK 74023 | Oil & Gas Operator | Nov 2024 |
| 3436 | Loman Linda Gann | Norman, OK 73069-6548 | Oil Operator | Apr 2011 |
| 3437 | London William W | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2015 |
| 3438 | London William W Inc | Oklahoma City, OK 73116-5116 | Oil & Gas Operator | Apr 2016 |
| 3439 | Lone Star Resources Company | Keyes, OK 73947 | Oil & Gas Operator | Mar 2015 |
| 3440 | Lone Tree Oil & Gas LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | May 2026 |
| 3441 | Long Engineering Company Inc | Oklahoma City, OK 73112-7769 | Oil Operator | Jun 2008 |
| 3442 | Long George L | San Antonio, TX 78209 | Oil & Gas Operator | Feb 1996 |
| 3443 | Long Production LLC | Claremore, OK 74017-2808 | Oil & Gas Operator | Oct 2019 |
| 3444 | Long Resources Inc | Austin, TX 78730 | Oil & Gas Operator | Feb 2026 |
| 3445 | Long Royalty Company | Yukon, OK 73085 | Oil & Gas Operator | Jan 2004 |
| 3446 | Long, James A | | Oil Operator | Aug 2000 |
| 3447 | Long, John P | | Oil & Gas Operator | Feb 2026 |
| 3448 | Longacre Oil & Gas | Enid, OK 73702 | Oil & Gas Operator | Mar 2013 |
| 3449 | Longberry Energy Inc | Keota, OK 74941 | Gas Operator | Feb 2026 |
| 3450 | Longbranch Oil Company | Oklahoma City, OK 73154-0735 | Oil & Gas Operator | Mar 2018 |
| 3451 | Longfellow Energy, LP | Dallas, TX 75225 | Oil & Gas Operator | May 2026 |
| 3452 | Longhorn Estates & Cattle Co. LLC | Jennings, OK 74038 | Oil Operator | Jan 2026 |
| 3453 | Longhurst Oil & Gas Inc | | Oil & Gas Operator | Nov 2013 |
| 3454 | Longview Production Company | Dallas, TX 75243-3795 | Oil & Gas Operator | Jan 2026 |
| 3455 | Lord Enterprises Inc | Oklahoma City, OK 73106-5050 | Oil & Gas Operator | Sep 2000 |
| 3456 | Lorentz Oil & Gas LLC | Edmond, OK 73034-7266 | Oil & Gas Operator | Jan 2026 |
| 3457 | Loto Energy LLC | Saint Louis, MO 63105 | Oil & Gas Operator | Feb 2026 |
| 3458 | Lou Dennis Oil Company Inc | Ada, OK 74820-2303 | Oil & Gas Operator | Jun 2016 |
| 3459 | Louisiana Land & Exploration Co. | Houston, TX 77210 | Oil & Gas Operator | Sep 2013 |
| 3460 | Lovell Keith | Stillwater, OK 74074-6459 | Oil & Gas Operator | Jan 2020 |
| 3461 | Loving Company (The) | Broken Arrow, OK 74014-0001 | Oil & Gas Operator | May 2013 |
| 3462 | Lowe Kenneth | Jennings, OK 74038 | Oil & Gas Operator | Sep 2025 |
| 3463 | Lowry Exploration Inc | Tulsa, OK 74119 | Oil & Gas Operator | Jan 2026 |
| 3464 | Lpadams Consulting LLC | Guthrie, OK 73044-3543 | Oil Operator | Jan 2026 |
| 3465 | LR Energy, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jan 2026 |
| 3466 | Lre Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2016 |
| 3467 | LRR IV Operating Inc | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 3468 | LTJ Enterprises LLC | Lone Grove, OK 73443 | Oil & Gas Operator | May 2025 |
| 3469 | Lu-Ray Petroleum LLC | Oklahoma City, OK 73121-1607 | Oil & Gas Operator | Feb 2026 |
| 3470 | Lubell Oil Company | Tulsa, OK 74103 | Gas Operator | Jul 1993 |
| 3471 | Lucky Ace Petroleum LLC | Carrollton, TX 75010-4232 | Oil Operator | Oct 2021 |
| 3472 | Lucky Four Oil & Gas Company | Sasakwa, OK 74867 | Oil & Gas Operator | Jan 2026 |
| 3473 | Lucky Oil Company | Comanche, OK 73529-0009 | Oil Operator | Dec 2025 |
| 3474 | Lucre Oil Company | Muskogee, OK 74401-5099 | Oil & Gas Operator | Jun 2019 |
| 3475 | Luke Oil Company | Bristow, OK 74010 | Oil & Gas Operator | Jan 2026 |
| 3476 | Lunar Investments Inc | Oklahoma City, OK 73118-4823 | Oil & Gas Operator | Jan 2026 |
| 3477 | Luther Oil Inc | Cameron Park, CA 95682-8865 | Oil & Gas Operator | Apr 2020 |
| 3478 | Luween Energy LLC | Oklahoma City, OK 73128 | Oil & Gas Operator | Dec 2025 |
| 3479 | Lvi Enterprises Trust | Plano, TX 75093-7789 | Oil & Gas Operator | Nov 2014 |
| 3480 | LVM Oil Production LLC | Yale, OK 74085-6688 | Oil & Gas Operator | Jul 2021 |
| 3481 | LX4, LLC | | Oil Operator | Feb 2026 |
| 3482 | LXS Inc | Stigler, OK 74462-0506 | Gas Operator | Nov 2013 |
| 3483 | Lyda Gerald SR X Bar Ranch | San Antonio, TX 78268-0907 | Oil & Gas Operator | Feb 1994 |
| 3484 | Lynan Energy Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | May 2013 |
| 3485 | Lynn William R | Pawhuska, OK 74056 | Oil & Gas Operator | May 2013 |
| 3486 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |
| 3487 | Lynx Oklahoma Operating LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Feb 2026 |
| 3488 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | May 2026 |
| 3489 | Lyon Energy, Inc. | Plano, TX 75075 | Oil & Gas Operator | Feb 2000 |
| 3490 | Lyon Hoyle | Sasakwa, OK 74867 | Oil Operator | Jan 2026 |
| 3491 | Lyons & Lyons Inc | Tulsa, OK 74119 | Oil & Gas Operator | Jan 2026 |
| 3492 | Lyric Energy, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Mar 1996 |
| 3493 | M & D Oil & Gas | Levelland, TX 79336 | Oil & Gas Operator | Aug 2000 |
| 3494 | M & D Pumping Service Inc | Ringwood, OK 73768-3415 | Oil & Gas Operator | Feb 2026 |
| 3495 | M & H Enterprises | Bartlesville, OK 74006-5504 | Oil & Gas Operator | Jan 2013 |
| 3496 | M & M Exploration Inc | Westminster, CO 80031 | Oil & Gas Operator | Feb 2026 |
| 3497 | M & M Petroleum Company | Mannford, OK 74044-0462 | Oil Operator | Apr 2020 |
| 3498 | M & M Resources Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2018 |
| 3499 | M & S Oil Co | Lawrenceburg, IN 47025-8675 | Oil & Gas Operator | Aug 2000 |
| 3500 | M & S Operating LLC | Oklahoma City, OK 73112 | Oil Operator | Mar 1999 |